Feed-water-heating arrangement on steamships.



W l I I 09% W. WEIR. FEED WATER HEATING ARRANGEMENT ONSTBAMSHIPS. APPLICATION FILED FEB.10, 191,2.

1,056,075. Patented Mar. 18, 1913.

2 SHBETSSHEET 1.

W. WEIR.

FEED WATER HEATING ARRANGEMENT ON STEAL BHIPS.

APPLICATION FILED 1113.10, 1912.

1,056,075. Patented Mar. 18, 1913.

2 SHEETS-SHEET 2.

i marked their" whicli'for WILLIAM WEIR; or CATHCART, SCOTLAND.

' Freewares-HEATING ABRANGEMEN-T on s'rEAMsi-urs.

inseam.

Specifioationof Letters Patent. t nt ag-13,1913, Application filed r m-M 10, ieig. Sria1No.876,859. i

2'0 em ee/20m it may concern:

' Be. it known that 1, Vietnam Win Ii, a

subject of the King (if Great Britain and lreiand, residing at Helm Foundry, Catherirt, in the county of Renfrew, Scotland, have; invented certain "new and 'useful- Illli proveinents wirrf eetl-Water-Heating Arrangements on Steamships; and I do hereby declare-the following to be a f'ull, clear, and exact (leseription' of the invention, suclr'as will enable others skilled in the art- .tofwhieh it appertaingtn make and use thesame, reference being. had'to the; accompanying drawings, and to letters or 'figurespoi I reference s'peeification.

his invention relates to the heating of boiler feed water on steamslii'ps and is spe eiallyapplicable in the case ofsteam-turbin e propelled vessels. f

The invention consists in a novel arrange ment and combination of machinery andjappara'tus which will be described in'the fol? lowing specification and more particularly set forth in the annexed claims. I

In steamships in which the main propelling" machinery is of'the steam-turbine type,

the temperature of the condensed steam and ater frem the main condensers is usually temperature of the feed water it m the hot-' lower than. I that: in reciproating engined.

vessels on acconiit of the higher 'vacuur'n'ear- -riedin the former.- 'In additiom-tliesteam' used by the auxiliary machinery in turbine? propelled I Steamships' is enerally large in amount ancl' may be sul fi lent to raise the well temperatiire to about 212 degrees Fahrenhe t or even hi her. The temperature range throughf whie i the feed water has to be-raiseci is therefore greater than has here tofore been usual with reciprocating marine engines; Accordingly, if, the I feedfheater is of the surface type, tlie'amQunt of hea'ting surface required isrelatively la'r e, and the heater is bulky and of considerableweight. when'sncl'i feed heaters are' fitted on the. discharge side of the feed pumps, they are necessarily subject to th'e boiler pressure on the grater side-i. a, the water side of the. heating surface, and'theWa-ter chambers are under the boiler pressure... Wrthheaters, as

generally designed, this involves large jointecl surfaces subject to this high pressure, with attending difiicult'ies, On. theflotl er part of this;

hand, anyefit ensiveadegree of feed heating" on the suction SldGOf the feed pumps necessari'ly involves. the placing of the feed, heater in a relatively'high position with re spect to the feed-pumps, in; order-that the suction of these pumps n ay fiot beiiinpaired by the high temperature; of the feed. It

follows, acco-rdingly, that'some" additional pump must be 'proviaed to force the Water from the-hotwellu'p into such a feed heater; and-this involves complieation and additbnfilstemnconsumption.

According to this invention, I arrange a preliminary feed water heater of the direct eontact type on, or .inelose proximity to, the

feecl tank; and into this'heate'r the main air.

pump delivers thefwaten- 'In this feed; heater 'the'feed' water mixes with a sufficientamount of auxiliary exhaust steam to "heat I the feed'water to a temperatureof approxh mately 140 degrees Fahrenheit, at which Qtmperature thev feed pumps will r'eaclily deal with the water Without theirsuctio' i powers being affected and without the necessity of reeei'vin the Water from an elevated' ositioa' The feed pumps then deliver 13 e feed Water'at this temperature to a surface feed heater or heaters fitted on the feed pipe or pipes, wherein. the feed"- water is raised in temperature to the limit imposed by the temperature of the heating steam whichalsois -the auxiliary'exhaust 'steam; To illustrate this, a hotwell tef1 1-' perature of SO'degrees Fahrenheit may-be considered. "Thepreliminaryheating 1n the (lirect-contactheater may be to 140 degrees, and the'final'heating 'in .the.'surface heater or heaters may to 220 degrees. The total rise in temperature isthus 140 degrees, of-C which 60 degrees is carried out in the direct.- contaet or. preliminary'heater. It will there f0r e be obvious that the surface feed heater may be ofgreatly reduced dimensions, hav 'ing only to heatthe feed ,waterSO degrees instead of the full 140 degrees under exist- I ing arrangements.

In Warships. where the feetl pumps are uatedin each stokehold,- the auxiliary errhaust mainpa-ss es from the. farthest stoke-j hold through the. others to the engine room where it 'qins the main auxiliary eliliaust range. en surface feed Waterhefaters are empleyed ancl are locatedin the stokeholds, I

it 18 common p actice'to carrya separateauxiliag'y exhaus's pipe from file present invention,' 1 directly ccnnect the: feed pump, the fan engine, and. any ether a1uiiliary machinery, iIu'QadlfinkeEnQld to ihe surface feed heater in thai: saiiivkeiloid and also fit a pipe from each feed heater to the present auxiiiary exhaust line of pip? which extends from (he engine room throw i1 all the stokeholds. The feed Water is first *aieg's, are situihe engine rooms, and is then passed the r alcn'g f zed pipeto. the siokeiwlids.

in each stokehold the fee d further heated by the exhaust steam from the zwxiiizufies in but siakeheloi, any addltmnai swam v 110%: 1:5 required being taken frsmv the ("1122:1212 "(92v haust-fine Qf pipe abw mien-ed to.

be required b atween the stokehoidsmxd 1112 ea'hgima mam. The sieam for the direct-coni'aci heater may be taken from the commen auxiliary exhaust pipe, 013, fi'om any particular 21112125313. en-

g11;5e,- or gmup 0f auxiliaries, and 12133 if ebi'aining steam fsee, or relatively free from before admission co'the heacet'.

I mm which fur the duefit-ycumct oil.

Figure I. of the fiCCmlliifinffiiig ma zlhzstmge haw my. inventmn diagrammatic.

thrmigh the bid ramp, 01. (me of ihe engine moms, 1% @mi 7 5 1s a low pressure sream turbine which oxhaus's to a main com denser C fi'mn whirl:- flie 51in and water 01? vondensafion are withdrawn by an air pump (I, which will, as a mile, ice-0f the inflependent sliemn-dri'ven Qrpe. fihe air pump is- 'ImI'gQS (he fired water through the filter etc the directcontact heatef f from which the waier passes to The feed fink gQ The air pump {if sieam hiven) exmus s by the pipe 7A into the auxiliary ezihansi main 1: into which (M19? sfiegm ihiYeli auxiliaries in the engine lQOf-ft -R'lfli shownma'y Risa exhaust, The heater fraceives heating fluid. from the auxfiimy exhaust main by-wavlof ($18 pipe Qbnnvctions are also pmfided between the anxiiinry exhaust main and the auxiliary aondensel' m, and betwen the an iiiary exhaust, main and the w pressure turbine b.

khead ('1 into Hm nearest stokhol i and, one stnkehold, is runtinued flu fm-the' nnosi shwkhold. In

I may-,- hmv- 'ever, with advantage 1n cez'iam cages sefem' The feed pipe 7) when there any move thm;

, auxiliary stam-drwen an pump adapted to with? emme :kmhm

nq same as 21 kefm'ane rz is d kiwi th aura ill'a'mil snail. um Fiar on he ipr; j.

By. mews necssifiy of pipes 5mm "ha 00m :mfi, even if this shnuid shut 0 I ubviafe (he exI-zzumi: pipe, I 0:: require in he 1 be heated in each iwrean to he .-0i[crs :21: a:

as new and desire in s;v v.:me 03,

.. Em Pair heifers n: ism- 1 In a SWKIHSIHP, m mmbmuhon, 1 (Yb mcbcon'tact feed heater Inca m in engine room, means for supplying this. heater Mil; exhaust Steam, :1 condgnser; a

draw the cgmdensed steam from said wndenser and dehvaz' 1t into sum! fued heater, :1 sm-fmw Water 101% i m stekehnld, feed pam'zp adupteslto pump feaa'l WHIGX, from .sauf,

may eximusfl m pump e'ssgine f, fun a Latina u 7;

and any 6 her zsux'iilzxz'iez-; t1 "I'n'e led by the pipe v '0 the 2 henier :jmfi smpk d as 3 .01 heating m0- dium. A cannon-(inn w is also 5}!"Vid6d between the surface flied l'zorzier and HM par 7 tion 3/ 0f the auxiliary 'exhmsm. main whirl) passes from the c-ngim: mum to the sinkw hUuj. 03: sinkehnl so Um? lav, sm'fncu heater may alum"; siezuu frmn aim 11min when required, :0

The engine room smxiii swim (ion of the auxiliaries. n; id be rranged in rfi vhm'gge d3 irvtiwuxufiz 0i by Way of. fife nnxiliau whzmm 9,5, Such km mix-am mm is Shown in). sdme of be 5215 41: rws'n. am? c-onnevted 10 51 mmfiizpry c but dischmge Hnefr wdxwsi. the} pipaa; 3, and 5.44mi 1'' 94? LE. 1 I5 to said surface healer, and means for sup plying auxiliary exhaust steam to said surith auxiliu ry extractor, pump adapted to; Withdraw the condensed steui'i'i from said condenser located in stohehold,

to. pump the feed water from said direct co'rtact heater to'seid surface heater, and means for supplying auxiliary exhaust steam-to said surface heater.

3'. In a steamship, in combination,- an auxeater located in engine room, a condenser, steain'driven a r pump located in engine room and adapted to Withdraw the coniliary exhaust main, a direct-contact feed h stcam t'romsa' d condenser end devliver it into, said feed heater, other steam I adaptthe exhaust from said air pumpand ironisaid other cngiiie room auxiliaries to said exhaust main,

driven engine room auxiliaries, pipes ed to convey a pipe adapted us convey exhaust steam from said exhaust-main to said feed heater, asurface feed-heater located in stokehold, a to pump the feed water dischar ed from said direct-contact heater to Sui I surface heater, and means for supplying auxiliary exhaust steel-into said surface heater.

4. In n'stearnslnp,=in-combination, an aux feed pump adapted ,iliary must 1min, a direct-contact'feed heats ted: in engine room, a condenser, a

steam-driven air pump ,lOCELlLQCl in engine room. and adapted to withdrmujhecon doused ste I liv it into said teed heater, other steaininfrom said condenser and dedrii and from said other engine room auxiliaries to said exhaust main. st i'ie ada te'dto convey exhaust steam from said exhaustinain to sun} feed cum] in s'tokehold, a feed pump adapted to pump t-lie feed Water discharged vfrom said direct-contact hcatertoisaid surface heater, steam-driven allXlllfiILlBS in said .stokehold,

and pipe connections adapted to supply auxiliary exhaust steam to said surface heater from said auxiliaries in stokehold and from 'room and adaoted'to Withdraw the con 'densed steam trom said condenser and-doliver it intosaid feed heater, other steamdrlven engine room aux1liar1es,pipes adapted to eonyey the exhaust from sluisir pump exhaust st eam from a selection of the engine a condenser, a steam-driven air and deliver it into'said feed heater, a surface feed heater a fe d-pump adapted- ;ropm auxiliar es oi'lj'extractor; a surface feed heater-located n en'enpine room auxiliaries, pipes adapted to com the exhaustfrom said an pump" heater, :1 surface. feed heater 1.0;"

' and from said other engine room auxiliaries to said exhaust main, apip e adapted to convey exhaust steam from said exhaust mam to sald teed heater, a 13]}36 adapted to convey room auxlliaries to sald feed heater, a sur j fuce'feed heater located in stokeholrl, a feed pump adapted to pum yt-he feed water (iischarged from saiddirect-contact heater to said surface heater ,and means for supplying auxiliary exhaust steam to said sin-lace heater] 4 -v 6. In a steamship, in combination, an aux "iliary exhaustmain, or direct contactfeed heater located in engine room, a; condenser, a steam-driven .air pump located in engine room and adapted td withdraw the con-- densed steam from said condenser and deliver it into .said feed heater, other steamd iven engine room auxiliaries, pipes adapti :to convey the exhaust from said air pump ind from said other engine room auxlliaries to said-exhaust main, a pipe adapted to con- .vey exhaust steam from said exhaustina-in to said feed heater, a pipe adapted to convey exhaust steam from a selection of the engine to said feed heaterjvia an stokeliold, a feed pump adapted to pump the vfeed Water discharged from said direct-con-- tact heater to said surface heater and means for supplying auxiliary exhaust steam. tosaid surface beaten, v

7. In a steamship, in combination, an auX- I iliary exhoust ma n,- a dire ctcont act feed 10 heater located in engine room, a condenser, a steam-driven air pump located in engine room i and 'adapted to] Withdraw the con-' densed steam from said condenser and dc liver it into said feed heater,-other steam- 1 driven engine room auxiliaries,pipe s adapted to convey the exhaust from said air pump and'from said other engine room auxiliaries to said exhaust main, a pipe adapted to con:

vey exhaust steam from. said .exhaustinain no.

to said feed heater, a pi'peadapted togzmnvey exhaust steam from uiselecti on of theeng'ine room auxiliaries-to said -ed heater, ii" 'sur face feed heater located in stokeholdga' feed" pump adapted to pump the feed water discharged "EIOIII saiddirecvoontact henterfto said surface heater, steam dr'iven auxili in. said stokehold, and pipe connections adapted to supply auxili aryjexhaust steam twsaid surface heater from said auxiliaries i, in. 'stokehold and from said auxiliarYex F haust main. r f

- 8? In a steamship, in combination, an aux iliary exhaust main a direct-contact feed heater located in engine room, a condenser, n stenm-driven air pump located in engine m im' m1 d adapted to Withdraw the-0on denscd steam from said condcnser and de- "liver it. into said teed heater, other steam driven engine room auxiliaries pipesadfa'pt- 18C fed is convey the exl'laus from gar exhaust steam be said in said exhaust main,

saidsis and 351 0111 said usher engine room auxiliaries to said exhausb main, a pipe adapsed i0 convey exhaust steam from said exhaust main to said feed heater, :1 pipe'adapted to cbnvsy exhausi; sfcm'n from a s electionof the engine rbom auxiliaries to $21M feed heater via an oil exfrmstor, a surface feed heavier heated in stokelmld, a feed pump adapted to the feed water discharged from said direct "ct heater to said surface heater, steam an auxiliaries in said si'ukshoid, and pipe connectifins adapted to. slippiy auXiL surface heater from said auxiliaries in stgkebc id and from said. auxiiiary exhausflmaih.

9 .Zn s steamship, in combinzifion, an any iliar exhaust main, :1, direct-csntast feed hsatsrlocmisd in engine roam, condenser, is steam-driven air pun-)9 iocst' d in engine wom and sdaptsd ix) withdraw the conds-ns'ed steam frcm saisl conciensez' and (R liver into said fed heater, other site-mm driven engine foam auxiliaries, pipes ariapb ed to convey ths exhaus from said air pump and from said 0thsr engine-mom auxiliaries \sy exhaust sisam from said exhaust tmsaid feeii heatef via an oil extracts? a, surface feed beaterfeed plimp adaptsd to pump tbs discharged from dd surfacells plying anxah uzn'p q and means for, su

aizst steam to monfsct feed a comlenser, ed in snginp aw tbs 00m pump.

hver it into driven sngin.

i to convey t :m .fz'm'i'lsaid i0 said exhsms y sxbaust 's to said feed 1 sula'facs feed h feed pump ad disqzarged If! to said surf said siokshold roam auxilia z? s L 2mm, :rpipe adapted 5:0 conxb'anst mam 1. ma. an 011 sxtmckor, a

safer located in and from said a pipe adapted to con- (the presence 03% WILLIAM WEIR. 

